Engine crankshaft convenient to disassemble

Abstract

The utility model relates to the related field of engine crankshafts, in particular to an engine crankshaft convenient to disassemble, which comprises a device body, an outer shell, a crankshaft part and an anti-abrasion layer are arranged in the device body, the crankshaft part is arranged in the outer shell, a main journal and a crank arm are respectively arranged on the crankshaft part, a bearing cover is arranged at the upper end of the main journal, and the crank arm is arranged on the bearing cover. Mounting holes are formed in the bearing cover and the outer shell, half-thread bolts are mounted in the mounting holes, a locking assembly is arranged in the bearing cover, a mounting groove is formed in the lower end of the bearing cover, and the anti-abrasion layer is fixed in the mounting groove, so that auxiliary locking of the half-thread bolts can be achieved, stable work of the bearing cover is conveniently kept, and the service life of the bearing cover is prolonged. The problem of crankshaft shaking caused by bolt loosening is avoided, the crankshaft mounting stability is improved, the anti-abrasion layer can be quickly disassembled and assembled, the bearing cover and the main journal are conveniently protected, and the problems of crankshaft shaking and abnormal sound caused by working abrasion are avoided.

Description

Technical Field

[0001] The utility model relates to the field related to engine crankshafts, in particular to an engine crankshaft which is convenient to disassemble. Background Art

[0002] The crankshaft is the most important part of the engine. It bears the force from the connecting rod and converts it into torque, which is output through the crankshaft and drives other accessories on the engine. The crankshaft is subjected to the combined effects of the centrifugal force of the rotating mass, the periodically changing gas inertia force and the reciprocating inertia force, which makes the crankshaft subject to bending and torsion loads. Therefore, the crankshaft is required to have sufficient strength and rigidity, and the journal surface must be wear-resistant, work evenly and have good balance.

[0003] In the prior art, the crankshaft is usually installed by directly fixing it with bolts. The crankshaft is placed at a specified position in the engine casing, and then the bearing cover is placed on the main journal of the crankshaft and fixedly connected to the mounting base by bolts. The operation is repeated to fix multiple sets of bolts. However, the bolts may still loosen during use. The loosening of the bolts may also cause abnormal noise and shaking of the crankshaft, affecting the safe use of the engine. At the same time, the bearing cover and the main journal of the existing engine crankshaft are more likely to have contact wear problems, affecting the safety and life of the crankshaft. Therefore, we need to upgrade and transform the existing technology to overcome its problems and shortcomings. Utility Model Content

[0004] The purpose of the utility model is to provide an engine crankshaft that is easy to disassemble, so as to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An engine crankshaft that is easy to disassemble is designed, including a device body, wherein the device body includes an outer shell, a crankshaft component and an anti-wear layer, the crankshaft component is installed in the outer shell, the crankshaft component is respectively provided with a main journal and a crank arm, the upper end of the main journal is provided with a bearing cover, the bearing cover and the outer shell are both provided with mounting holes, and half-thread bolts are installed in the mounting holes, a locking assembly is arranged inside the bearing cover, a mounting groove is opened at the lower end of the bearing cover, and the anti-wear layer is fixed in the mounting groove.

[0007] Furthermore, the locking assembly includes a gear and a mounting seat, a group of racks are respectively arranged on both sides of the gear, a plug-in rod is fixed to the outer end of the rack, a worm and a worm wheel are arranged in the mounting seat, and a knob is connected to one side of the worm.

[0008] Furthermore, the gear rotates inside the bearing cover, the two sets of racks are meshed on both sides of the gear, a plug hole is opened on the upper end of the half-thread bolt, and the front end of the plug rod passes through the bearing cover and is plugged into the corresponding plug hole.

[0009] Furthermore, the mounting seat is fixed on the top of the bearing cover, the worm and the worm wheel are meshed with each other and rotate inside the mounting seat, the knob is fixedly connected to the worm and rotates outside the mounting seat, and the lower end of the worm wheel is fixedly connected to the gear.

[0010] Furthermore, the lower end of the anti-wear layer is attached to the main shaft journal, and five groups of bearing caps are provided and are respectively located on each section of the main shaft journal.

[0011] Furthermore, a plurality of side blocks are symmetrically arranged on both sides of the anti-wear layer, and fixing bolts are connected between the side blocks and the bearing cover.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model is provided with an outer shell, a crankshaft, a main journal, a bearing cover, a mounting hole, a half-thread bolt, a locking assembly and a plug-in hole in the device. The bearing cover is quickly disassembled and fixed by the half-thread bolt, and the half-thread bolt is connected and limited by the locking assembly, which can realize auxiliary locking and limiting of the half-thread bolt, facilitate the stable operation of the bearing cover, avoid the problem of crankshaft shaking caused by loose bolts, and improve the stability of crankshaft installation.

[0014] 2. The utility model is provided with a bearing cover, an anti-wear layer, a side block, a fixing bolt and a mounting groove in the device. The side block and the fixing bolt are used to fix the anti-wear layer in the mounting groove, and the anti-wear layer can be quickly disassembled and assembled. The anti-wear layer is used to protect the bearing cover and the main journal, avoiding shaking and abnormal noise of the crankshaft due to working wear, thereby improving the practicality and service life of the crankshaft.

[0015] With reference to the following description and drawings, specific embodiments of the present invention are disclosed in detail, indicating the manner in which the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications and equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1It is a schematic diagram of the overall structure of an engine crankshaft that is easy to disassemble according to the utility model;

[0018] Figure 2 This is an exploded view of the crankshaft structure of an engine crankshaft that is easy to disassemble according to the utility model;

[0019] Figure 3 This is an exploded view of the bearing cover structure of an engine crankshaft that is easy to disassemble according to the utility model;

[0020] Figure 4 The utility model is an exploded view of a locking assembly of an engine crankshaft that is easy to disassemble.

[0021] In the figure: 1. device body; 2. outer shell; 3. crankshaft; 4. main journal; 5. crank arm; 6. bearing cover; 7. mounting hole; 8. half-thread bolt; 9. locking assembly; 91. gear; 92. rack; 93. plug-in rod; 94. mounting seat; 95. worm; 96. worm wheel; 97. knob; 10. plug-in hole; 11. anti-wear layer; 12. side block; 13. fixing bolt; 14. mounting groove. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figure 1 As shown in Figure 4, the present embodiment provides a design of an engine crankshaft that is easy to disassemble, including a device body 1, the device body 1 includes an outer shell 2, a crankshaft member 3 and an anti-wear layer 11, the crankshaft member 3 is installed in the outer shell 2, and the crankshaft member 3 is respectively provided with a main journal 4 and a crank arm 5, a bearing cover 6 is provided at the upper end of the main journal 4, the bearing cover 6 and the outer shell 2 are both provided with mounting holes 7, and a half-thread bolt 8 is installed in the mounting hole 7, a locking assembly 9 is provided inside the bearing cover 6, a mounting groove 14 is opened at the lower end of the bearing cover 6, and the anti-wear layer 11 is fixed in the mounting groove 14.

[0024] Preferably, the locking assembly 9 includes a gear 91 and a mounting seat 94, a group of racks 92 are respectively provided on both sides of the gear 91, a plug-in rod 93 is fixed to the outer end of the rack 92, a worm 95 and a worm wheel 96 are provided in the mounting seat 94, a knob 97 is connected to one side of the worm 95, the gear 91 is rotatably located inside the bearing cover 6, two groups of racks 92 are meshed on both sides of the gear 91 in opposite directions, a plug-in hole 10 is opened at the upper end of the half-tooth bolt 8, the front end of the plug-in rod 93 passes through the bearing cover 6 and is correspondingly plugged into the plug-in hole 10, the mounting seat 94 is fixed to the top of the bearing cover 6, the worm 95 and the worm wheel 96 are meshed with each other and are rotatably located in the mounting seat 94, the knob 97 is fixedly connected to the worm 95 and is rotatably located outside the mounting seat 94, and the lower end of the worm wheel 96 is fixedly connected to the gear 91;

[0025] The worm 95 is controlled to rotate by the knob 97, and the worm 95 drives the worm wheel 96 to rotate, thereby driving the gear 91 to rotate. The gear 91 drives the racks 92 on both sides that are meshed with each other to move in opposite directions, and the rack 92 drives the plug-in rod 93 fixed at the outer end to move accordingly. The plug-in rod 93 cooperates with the plug-in hole 10 to facilitate the limiting and connection of the half-thread bolts 8 on both sides, facilitate the disassembly of the crankshaft component 3 and improve the installation stability of the bearing cover 6.

[0026] Preferably, the lower end of the anti-wear layer 11 is attached to the main journal 4, and the bearing cap 6 is provided with five groups and is respectively located on each section of the main journal 4. A plurality of side blocks 12 are symmetrically provided on both sides of the anti-wear layer 11, and a fixing bolt 13 is connected between the side block 12 and the bearing cap 6;

[0027] The side block 12 and the fixing bolt 13 cooperate to facilitate the disassembly and assembly of the anti-wear layer 11. The anti-wear layer 11 facilitates contact protection of the main journal 4 and the bearing cover 6 of the crankshaft 3 to avoid severe wear and tear that may lead to crankshaft loosening and abnormal noise.

[0028] The use principle and use process of the utility model are as follows: when using, first place the crankshaft component 3 on the outer shell 2, buckle the bearing cover 6 on each section of the main shaft neck 4 of the crankshaft component 3, and then fix the bearing cover 6 to the outer shell 2 through the half-thread bolts 8 and the mounting holes 7, and finally control the rotation of the worm 95 through the knob 97, and the worm 95 drives the worm wheel 96 to rotate accordingly, and the worm wheel 96 drives the lower end gear 91 to rotate, thereby driving the two sets of racks 92 and the plug-in rod 93 to move in opposite directions, and the two sets of plug-in rods 93 extend out from the bearing cover 6 and are plugged into the plug-in holes 10 respectively. At this time, the two sets of half-thread bolts 8 are limited in the mounting holes 7 and cannot move up and down, which further improves the stability of the bearing cover 6 and maintains the stability of the crankshaft component 3. An anti-wear layer 11 is fixed in the mounting groove 14 at the lower end of the bearing cover 6, which contacts with the main shaft neck 4 through the anti-wear layer 11, effectively reducing the wear of the crankshaft component 3 and the bearing cover 6, and improving the quality and stability of the crankshaft.

[0029] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

Claims

1. An engine crankshaft that is easy to disassemble, characterized in that: The invention comprises a device body (1), wherein the device body (1) comprises an outer shell (2), a crankshaft component (3) and an anti-wear layer (11), wherein the crankshaft component (3) is installed in the outer shell (2), and the crankshaft component (3) is respectively provided with a main journal (4) and a crank arm (5), wherein the upper end of the main journal (4) is provided with a bearing cover (6), wherein both the bearing cover (6) and the outer shell (2) are provided with mounting holes (7), and a half-thread bolt (8) is installed in the mounting hole (7), wherein a locking component (9) is arranged inside the bearing cover (6), and a mounting groove (14) is opened at the lower end of the bearing cover (6), and the anti-wear layer (11) is fixed in the mounting groove (14).

2. The easily disassembled engine crankshaft according to claim 1, characterized in that: The locking assembly (9) comprises a gear (91) and a mounting seat (94), a group of racks (92) are respectively arranged on both sides of the gear (91), a plug-in rod (93) is fixed to the outer end of the rack (92), a worm (95) and a worm wheel (96) are arranged in the mounting seat (94), and a knob (97) is connected to one side of the worm (95).

3. The easily disassembled engine crankshaft according to claim 2, characterized in that: The gear (91) is rotatably located inside the bearing cover (6), and the two sets of racks (92) are meshed on both sides of the gear (91) in opposite directions. A plug hole (10) is provided at the upper end of the half-thread bolt (8), and the front end of the plug rod (93) passes through the bearing cover (6) and is plugged into the plug hole (10) accordingly.

4. The easily disassembled engine crankshaft according to claim 2, characterized in that: The mounting seat (94) is fixed on the top of the bearing cover (6); the worm (95) and the worm wheel (96) are meshed with each other and are rotatably located inside the mounting seat (94); the knob (97) is fixedly connected to the worm (95) and is rotatably located outside the mounting seat (94); and the lower end of the worm wheel (96) is fixedly connected to the gear (91).

5. The easily disassembled engine crankshaft according to claim 1, characterized in that: The lower end of the anti-wear layer (11) is attached to the main shaft journal (4), and five groups of bearing covers (6) are provided and are respectively located on each section of the main shaft journal (4).

6. The easily disassembled engine crankshaft according to claim 1, characterized in that: A plurality of side blocks (12) are symmetrically arranged on both sides of the anti-wear layer (11), and a fixing bolt (13) is connected between the side block (12) and the bearing cover (6).

Images